\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
{
\begin{tabular}{l*{8}{c}}
\toprule
                &\multicolumn{4}{c}{\shortstack{Weak incumbent\\(head start $\approx$ 0)}}  &\multicolumn{4}{c}{\shortstack{Strong Incumbent \\  (head start $>>$ 0)}}  \\\cmidrule(lr){2-5}\cmidrule(lr){6-9}
                &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}&\multicolumn{1}{c}{(7)}&\multicolumn{1}{c}{(8)}\\
                &\multicolumn{1}{c}{Median}&\multicolumn{1}{c}{Median}&\multicolumn{1}{c}{Quartile}&\multicolumn{1}{c}{Quartile}&\multicolumn{1}{c}{Median}&\multicolumn{1}{c}{Median}&\multicolumn{1}{c}{Quartile}&\multicolumn{1}{c}{Quartile}\\
\midrule
Before          &   -1.011         &   -0.983         &   -1.215         &   -1.271         &   -0.711\sym{*}  &   -0.764         &   -1.043\sym{**} &   -1.154\sym{**} \\
                &  (0.636)         &  (0.650)         &  (0.787)         &  (0.811)         &  (0.416)         &  (0.484)         &  (0.480)         &  (0.532)         \\
\addlinespace
Above median corruption&   -0.959\sym{*}  &   -0.972\sym{*}  &                  &                  &   -0.913\sym{*}  &   -0.991\sym{*}  &                  &                  \\
                &  (0.571)         &  (0.557)         &                  &                  &  (0.474)         &  (0.518)         &                  &                  \\
\addlinespace
Before $\times$ Above median corruption&    0.909         &    0.947         &                  &                  &    1.953\sym{***}&    2.011\sym{**} &                  &                  \\
                &  (0.752)         &  (0.764)         &                  &                  &  (0.703)         &  (0.880)         &                  &                  \\
\addlinespace
2nd quartile of corruption&                  &                  &   -0.149         &   -0.030         &                  &                  &   -1.635\sym{***}&   -1.755\sym{***}\\
                &                  &                  &  (0.789)         &  (0.816)         &                  &                  &  (0.587)         &  (0.617)         \\
\addlinespace
3rd quartile of corruption&                  &                  &   -0.846         &   -0.881         &                  &                  &   -1.455\sym{**} &   -1.591\sym{**} \\
                &                  &                  &  (0.729)         &  (0.757)         &                  &                  &  (0.611)         &  (0.644)         \\
\addlinespace
4th quartile of corruption&                  &                  &   -1.153         &   -1.063         &                  &                  &   -0.958\sym{*}  &   -1.037\sym{*}  \\
                &                  &                  &  (0.706)         &  (0.677)         &                  &                  &  (0.549)         &  (0.605)         \\
\addlinespace
Before $\times$ 2nd quartile of corruption&                  &                  &    0.862         &    1.314         &                  &                  &    1.445         &    1.674\sym{*}  \\
                &                  &                  &  (1.035)         &  (1.044)         &                  &                  &  (0.879)         &  (0.969)         \\
\addlinespace
Before $\times$ 3rd quartile of corruption&                  &                  &    1.068         &    1.321         &                  &                  &    2.297\sym{***}&    2.516\sym{***}\\
                &                  &                  &  (0.923)         &  (0.959)         &                  &                  &  (0.768)         &  (0.842)         \\
\addlinespace
Before $\times$ 4th quartile of corruption&                  &                  &    1.195         &    1.254         &                  &                  &    2.035\sym{**} &    2.061\sym{*}  \\
                &                  &                  &  (0.951)         &  (0.943)         &                  &                  &  (0.931)         &  (1.083)         \\
\midrule
Observations    &      416         &      416         &      416         &      416         &      420         &      420         &      420         &      420         \\
Dep. Var. Mean  &    2.910         &    2.910         &    2.910         &    2.910         &    2.798         &    2.798         &    2.798         &    2.798         \\
Mayor and municipal controls&                  &\checkmark         &                  &\checkmark         &                  &\checkmark         &                  &\checkmark         \\
State and term FE&\checkmark         &\checkmark         &\checkmark         &\checkmark         &\checkmark         &\checkmark         &\checkmark         &\checkmark         \\
Adjusted R$^2$  &    0.195         &    0.205         &    0.189         &    0.202         &    0.098         &    0.099         &    0.098         &    0.099         \\
$\beta_0+\beta_2 \, c_{ist}$&   -0.102         &   -0.035         &   -0.020         &   -0.017         &    1.242         &    1.247         &    0.992         &    0.906         \\
p-value         &    0.800         &    0.931         &    0.968         &    0.973         &    0.013         &    0.025         &    0.180         &    0.238         \\
\bottomrule
\end{tabular}}
%
